Samsung Galaxy Keeps Restarting - Samsung Troubleshooting

Unexpected device reboots often caused by damaged or incompatible files.

Safe mode prevents nonessential apps from running.

Last resort: Backup phone and perform a factory reset to rule out software issues.

A stuck Power Button can cause bootlooping issues.

Inspect the power button for signs of depression or movement when pressed.
Clean the phone with a damp microfiber cloth, paying attention to crevices around the button.
Use a toothpick to remove stubborn debris from the button area.

Verify that no liquid has entered the housing and caused internal damage.

Check for any visible signs of damage or bending on the button and surrounding housing.
Replace the power button if cleaning does not resolve the issue, or if you find visible damage.

If necessary, also consider replacing the ribbon cable, depending on your model's specifications.

Cache partition may be filled or corrupted, affecting system performance.

Lithium-ion batteries can be hazardous if damaged, exercise caution.

Check your battery health using the Samsung Members application under Support > Diagnostics.
If the battery is marked as "Bad", replace it with a new one.

If you can't access Samsung Members, use the code *#228# in the Phone app to enter diagnostics mode.

Check the battery level block range: (0~8) indicates 8 blocks are available. Less than this may require replacement.
Compare capacity with rated new capacity to determine if the battery has been consumed.

Look for signs of battery swelling, such as localized screen discoloration or lifting along one side.

Faulty motherboard components may be the root cause of issues.

Inspect the board for signs of damage: burned or cracked components, liquid residue, corrosion, or bends.
If you suspect liquid damage, refer to the iPhone Liquid Damage Guide (applicable to all mobile devices).

Replacing the logic board with a new one is often the most practical solution for DIYers.

For more experienced users: microsoldering may be an option for repairing individual components on the board.